Season 6, Episode 20: "The Doodle"

Yep. They're in your bedroom too, Mr. Seinfeld.

You got a full-blown outbreak of fleas on your hands.

I don't get it. How did this happen? I don't have a dog.

I don't explain them, Mr. Seinfeld. I just exterminate them.

I don't understand this.

I'm gonna have to seal the place up for 48 hours and fog it.

Only way to get rid of them.

Nobody can be in here for 48 hours? I got my parents in town.